RT Journal Article SR Electronic T1 Maternal history of miscarriages and measures of fertility in relation to childhood asthma JF Thorax JO Thorax FD BMJ Publishing Group Ltd and British Thoracic Society SP thoraxjnl-2018-212598 DO 10.1136/thoraxjnl-2018-212598 A1 Peter G Gibson YR 2018 UL http://thorax.bmj.com/content/early/2018/11/26/thoraxjnl-2018-212598.abstract AB